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How can I cheaply change the tire diameter / revolutions per mile parameters in the ECU/tune for tires that are different in size that stock? I have a rear set of drag radials and I would like to easily change the Parameters as I will be swapping them at least monthly.

Which size drag radials should I buy? 315/35/17 or 305/45/17? Me: 2016 GT, Roush TVS, stock 670hp tune, automatic transmission, 3:55 rear, LCA bearings, BMR cradle lock out kit, Viking rear drag shocks. The stock wheel size is 255/40/19 which is 27" diameter. The 315/35/17 is 25.7" diameter...

I picked up the BMR front minimal drop springs & BMR rear drag springs. I will be changing the springs out in 2 weeks. My question is: Should I go ahead and upgrade the front struts/shocks while they are in there doing the same labor anyway? I think the only additional cost will be the...

When I bought my Mustang GT this year there was some paperwork from the factory in the glove box. One page looked like a check list of items installed/checked for functionality. Another paper said "Part shortage LH inner door bezel", that part was actually missing I noticed several days later...